Mounting procedure for the OPS INC muzzle brake:

The crowned end of the barrel should be approximately flush with the rear of the first muzzle brake chamber. The thread length is approximately .6" long and the shoulder on the barrel must be machined 90 degrees to the axis of the bore. After the thread is machined on the barrel, and while the barrel is still in the lathe, screw the brake on the thread to check for fit. The NARROW WEB on the brake is the TOP of the brake. You can use a crescent type adjustable wrench tightly adjusted to the larger web, or a 3/8 diameter rod inserted through the front port of the brake when tightening the brake to the barrel. The brake should be tight on the barrel to eliminate any chance of the brake causing vibration to the barrel. The rear of the brake should have firm contact with the barrel at the thread shoulder area, this is best acquired if you relieve the thread at the shoulder area. Be sure the threads are oiled to eliminate any chance of galling. If the brake is screwed on and off the barrel several times during the fitting procedure, the threads will be burnished and a tight fit is achieved.

It is recommended that the brake be permanently mounted using red loctite. The baffle has a slightly inclined angle to keep the barrel neutral with no upward or downward movement when shooting. The NARROW TOP WEB is a result of this design feature. It is imperative that the rear shoulder of the brake firmly contacts the shoulder of the barrel.